The fanfic could start with Bakugou having a major conflict with other heroes or hero students. This could lead to him being ostracized. The League of Villains, seeing his potential and his outcast status, would try to recruit him. They might play on his pride, saying that he's too strong to be held back by the heroes. Bakugou, in his anger and need to prove himself, could then join them. As he's with the villains, he would have to deal with their different ideologies and methods, which could create a lot of internal and external drama in the story.
Well, one possibility is that Bakugou is initially frustrated with the hero society in the fanfic. Maybe he feels overlooked or misunderstood. The League of Villains could approach him, promising a place where he can use his power more freely without the restrictions of the hero rules. And he might be tempted by their offer, leading to his joining.
His aggression might become more unhinged. Without the moral compass of the hero side, he could be more willing to use excessive force. He'd still be competitive, but now it would be against heroes instead of his fellow hero trainees.
Well, a plot twist could be Batman's technology being hacked by an unknown enemy. Since he is known for his high - tech gadgets and strategies, if his systems were compromised, it would put the whole Justice League in jeopardy. Maybe the hack reveals some of Batman's deepest secrets, which could either cause a rift within the League or bring them closer together as they deal with the fallout. Another idea is that Batman discovers a long - lost relative who has ties to one of the Justice League's main enemies. This would create a moral dilemma for Batman and add a whole new layer of complexity to the story.
Well, it could be about Batman initially being hesitant to fully join the Justice League. Maybe he has trust issues with some of the members at first. Then, he gradually starts to work with them on a big threat that requires all their skills combined, like an alien invasion or a powerful super - villain that's too much for any one hero to handle alone.
In this fanfiction, it could be that Tony has a hidden agenda when he joins the villains' card game. He might be trying to infiltrate the villains' group from the inside. So he plays along with their card game, making alliances and enemies within the group as he goes. All the while, he's secretly gathering information to take them down.
Perhaps the story could start with Harry being in a desperate situation. He might think that joining the League of Doom is his only option to gain power to defeat a greater evil. However, once inside, he realizes the true nature of the league and has to fight against his new 'allies' to protect the wizarding world. He could use his knowledge of both the light and the dark magic he's exposed to within the league to his advantage.
One possible plot could be that Danny Phantom's ghostly abilities are detected by the Justice League. They initially view him as a threat but then realize he can be an asset. Danny could help them with foes that have intangible or otherworldly powers. For example, against an enemy that can phase through walls or possess people, Danny's experience dealing with ghosts would come in handy.
Darkseid is another possible villain. He is extremely powerful. He could send his minions to attack the Justice League first, weakening them, and then use some sort of magic or technology to trap them. Batman would then have to find a way to free the League from Darkseid's clutches, perhaps by finding a weakness in Darkseid's power source.
One possible plot is that Bakugou has been secretly in love with Deku for a long time. He observes Deku's kindness and growth, and it makes his heart flutter. He decides to propose when they are alone one day. He might start by reminiscing about their journey together, from being rivals to becoming something more, and then pop the question.
The plot could involve Bakugou getting a quirk - related eye injury during a battle. As a result, he has to wear glasses. His initial reaction is one of frustration because he thinks it makes him look weak. But as the story progresses, he realizes that the glasses are a symbol of his resilience. He trains harder and becomes an even more formidable hero, all while sporting his new glasses.
The plot could be about Bakugou getting exposed to some sort of gamma - like radiation that gives him Hulk - like powers. He then has to figure out how to control it while still being himself. Maybe he accidentally destroys some things around him at first, and has to face the consequences. Along the way, he could team up with his friends to fight against villains who are now even more afraid of this new, super - powerful Bakugou.